v2022072800

Drop support for versions prior to MOODLE_311_STABLE
Ensure MOODLE_400_STABLE requirements met
Added support for activity header notifications
Updated Github CI

What's Changed

• Moodle 3.11 and 4.00 by @lushonline in #4

New Contributors

• @lushonline made their first contribution in #4

Full Changelog: v2021072100...v2022072800